Sleeping is a recurring mental and physical state in which consciousness and the voluntary control of muscles is inhibited to help restore they body’s natural systems. Because it is one of the most important functions of the body that repeats daily, the act of sleeping controls the sizes and clearances of bedroom furniture and layouts in both residential and hotel environments. Though sleeping occurs most formally on mattresses set on bed frames, sleep is also often undertaken casually on living room sofas or in public settings such as parks or beaches. The following assortments of related layouts, furniture elements, and positions have been combined to illustrate the range of issues concerned with the act of sleeping.